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- A student sells balloons at a school fair, starting with 100 balloons. Each hour, the number of remaining balloons is counted and recorded in a table. - After 1 hour there were 90 balloons remaining, and after 3 hours there were 70 balloons remaining. - The student sells 10 balloons each hour, as shown by the pattern in the table. - Using the expression 100 - 10h, where h is the number of hours passed, will predict the number of balloons remaining after any given number of hours.
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- 1. S C A F F O L D E D Problem Solving A student sells balloons at the school fair. She starts with 100 balloons. Every hour, she counts the remaining balloons. The numbers are shown in the table below. Hours Passed 1 2 3 4 Number of Balloons 90 80 70 60 23. How many balloons are remaining after 1 h? After 3 h? 24. How many balloons does the student sell each hour? 25. Which expression can you use to 鍖nd the number of balloons remaining after h hours? 10h 100 h 100 10 h 26. Use the correct expression to predict the number of balloons that will be left after 6 h if the pattern continues. 27. If the pattern continues, after how many hours will the student run out of balloons? 28. Writing in Math The cost in dollars of an n-mile trip with two taxi 1 + 2n services is shown at the left. For rides between 1 and 3 mi, which Supreme Taxi service would you choose? Explain. Evaluate each expression for a 9 and b 4. 4+n Townie Taxi 29. 11 a 6b 30. 2ab 31. 9b a b C Challenge 32. Bob plays a game at the school fair. He starts with 0 points. He gets 25 throws. He wins 12 points for hitting the target and loses 8 points for each miss. Bob ends with a score of 0. How many hits and misses does Bob have? Multiple Choice Practice and Mixed Review For California Standards Tutorials, visit PHSchool.com. Web Code: axq-9045 NS 1.2 33. Evaluate w w 2 for w 14. 7 14 21 28 NS 1.2 34. Mr. Vasquez can seat 200 people at his restaurant. So far tonight, Mr. Vasquez has seated 8 booths with 6 people each. How many empty seats are left in the restaurant? 48 seats 198 seats 152 seats 248 seats Lesson 1-1 Simplify each expression. 35. ( 7 . 3 7 . 7) 3 36. 16 5 2.2 37. 27 3 6.8 nline Visit: PHSchool.com Web Code: axa-0102 11